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Finding the Fourth Proportional to 245,589, 338,914.44 and 138,158.16

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Solution

The fourth proportional to 245,589, 338,914.44 and 138,158.16 is: 190,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,589 : 338,914.44 = 138,158.16 : x
  2. Step 2: Convert to fraction form
    245,589/338,914.44 = 138,158.16/x
  3. Step 3: Cross multiply
    245,589x = 338,914.44 × 138,158.16
  4. Step 4: Simplify right side
    245,589x = 46,823,795,427.83
  5. Step 5: Solve for x
    x = 46,823,795,427.83/245,589
  6. Step 6: Final answer
    x = 190,659.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.